Paris Attack: The Connections to Terrorist Groups

What role did Islamic State and al Qaeda play in the Paris Attacks? WSJ’s Jason Bellini has #TheShortAnswer. Photo: Foreign Photo Service/Zuma Press

This transcript has been automatically generated and may not be 100% accurate.

days after a gunman who say were behind the attack on Charlie and the satirical magazine ... were killed in a police raid ... investigators are still bracing for more on whether the main suspects were acting on their own ... or carry out someone else's or worse ... intelligence officials begin to find clues to ... the question ... how are the gunman connected to one another ... and to known terrorist organizations start with the two rather see in this video after the alleged attack on the magazine ... that left twelve people dead cherry Kool watching and cited watches are both French citizens of Algerian descent ... sheriff younger brother ... was arrested in two thousand by a preferred to stories uncovered a larger network of ... would-be friend she Highness who are planning to fight U S soldiers in law ... the older brother was question by French police ... but didn't take any further action against him ... sheriff was detained and eventually convicted of terrorism offences into thousandeight ... but released soon after ... but while in jail sheriff had contact with al Qaeda recruit ... Shabaab's Lego ... Yawger and was serving time for Cymbalta plot to bomb the U S Embassy in France ... Mr but also in contact with ... Ahmed Equal Bali ... the gonna do today out to the Charlie Hebdo attack ... allegedly killed a police officer on most Friday killed four hostages at a kosher grocery in Paris ... before being shot in a raid by police in two thousand on all three men were out of prison ... Mr. cool Bali ensure watching began making regular visits to Mr bagel ... consult their involvement in a secret plan ... one that in a moment ... the crawling your site traveled to them and staying there for close to two years ... Yemen is the face of all kinds postings were soft ... side to ride in the country on a student visa issued by the language school he attended ... there he became friends with any reports the hall ... who also attended the same mosque ... Nigerian Omar power of up to but how ... could become known to the world in December of that year ... as the underwear bomber ... Mr Optima told was convicted of attempting to blow up a flight from Amsterdam to Detroit ... by detonating ... explosives hidden in his underwear you supplied with the font and trained by al Qaeda ... Mr Optima told Matt extensively with the group's leader ... Anora all along ... they kept ... us for preacher recruiting women to commit terror acts abroad ... Mr O'Loughlin was killed in two thousand eleven us strong strike according to unclear is what relationship if any side had with Yemen's all kind of billion during his time in Yemen ... to return to France in two thousand ... that same year his brother sheriff gets in trouble with the police for his alleged role in a planned led by Mr. bit off putting Mr cool Bali help an Algerian militant convicted of planting a bomb in the Paris subway night's ninety five ... escaped from prison ... police arrested ... three men and others ... with the fear their plan was about to put emotion ... Mr Begg all still serving a ten year sentence ... he denies this Boyer any involvement in the Paris attack ... Mr. cool Bali was convicted and released from prison last year ... prosecutors didn't press charges against Mr Chua Chu the year after this the rest ... he traveled to Yemen ... forcefully team made more terrorist contacts ... so who else was involved in the Paris Attack don't know for sure war ... but al Qaeda in the Arabian Peninsula is now claiming responsibility ... releasing a video in which the Sooners says his organization financed and plan the operation ... in the video released on Islamic social networks Mr. cool Bali pledges his allegiance ... to the leader of the Islamic State ... the so-called Ali's girlfriend is also an alleged accomplice ... officials say she arrived in a stumble on January second ... at last we crossed into Syria ... is not known if you joined up with Islamic State or any other group there ... the CSA still trying to learn how and whether al Qaeda for Islamic State were involved in some way ... or the plotting and planning for the Paris attack ... was dumped entirely by them and for now themselves dad ... short answer